I have tried various different BIOS versions for a dc7800, Z420, 800 G1, 8200 Elite and all fail with the error:
An unrecoverable error has occurred while flashing the BIOS.
Error code = 0xF0 (FLASH_FAILED)
That error is completely useless in diagnosing the root cause. I expect better error reporting from a business like HP, it doesnt even say whether its a write fail or a crc fail.
Ironically, I DID manage to flash the BIOS on the 8200 (to version available on website only, not on SDM) and after the 'successful' flash, the device refused to boot from any USB devices from that point forward so it needs RMA'ing so i am suspicious that it did not flash successfully.
Has anyone got any ideas? It is presumably something in our environment, but I have nothing to go on at this point. I does not appear to be due to the Password.bin becaues when i deliberately get that wrong i get a different error.